Laelia with white sunken stain on leaf

[Roma Oli]

Hello,

I purchased a Laelia purpurata a few weeks ago. It is one of my first orchids and the first of this kind.

Soon after, a stain on a leaf appeared - in the beginning, it was brownish and in a week it became whitish. The surface is dry and sunken, there's almost no discolouration on the other side of the leaf. Do you know what it is? Cold damage? Since I have other orchids, I am worried it is contagious.

Apart from that, today I noticed translucent spots on the new growth (honeydew?) and a weird green bubble on the root. Pseudobulbs were plump and became shrivelled too.

I am going to repot it as soon as possible. If anyone has any advice on how to tackle these issues, I would very much appreciate it.

Thanks!